package day04;

import java.util.Scanner;

public class txt8 {
    public static void main(String[] args) {
        Scanner s=new Scanner(System.in);
        for ( int i=10 ; i<=10 ; i++  ){
            double scroe=s.nextDouble();
            if (scroe<=100   &&  scroe>=85 ){
                System.out.println("优秀");
            }else if (scroe<=85   &&  scroe>=70){
                System.out.println("良好");
            }else if ( scroe<=70   &&  scroe>=60 ){
                System.out.println("中等");
            }else if (scroe<=60   &&  scroe>=0){
                System.out.println("不及格");
            }else {
                System.out.println("输入错误");
            }








        }
    }
}
